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author | Andrii Nakryiko <andrii@kernel.org> | 2021-10-08 13:22:57 -0700 |
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committer | Andrii Nakryiko <andrii@kernel.org> | 2021-10-08 13:22:58 -0700 |
commit | a1852ce0e54251c977e92ca55476ef37bd08fb0e (patch) | |
tree | e2abd0f4d04594fc4204db299cb5b74be0d222f8 /net | |
parent | 1c8dab7da1d27a474721a789777af82edf2085c1 (diff) | |
parent | fa7f17d066bd0996b930b664aa0ed1f213fc1828 (diff) |
Merge branch 'add support for writable bare tracepoint'
Hou Tao says:
====================
From: Hou Tao <houtao1@huawei.com>
Hi,
The patchset series supports writable context for bare tracepoint.
The main idea comes from patchset "writable contexts for bpf raw
tracepoints" [1], but it only supports normal tracepoint with
associated trace event under tracefs. Now we have one use case
in which we add bare tracepoint in VFS layer, and update
file::f_mode for specific files. The reason using bare tracepoint
is that it doesn't form a ABI and we can change it freely. So
add support for it in BPF.
Comments are always welcome.
[1]: https://lore.kernel.org/lkml/20190426184951.21812-1-mmullins@fb.com
Change log:
v5:
* rebased on bpf-next
* patch 1: add Acked-by tag
* patch 2: handle invalid section name, make prefixes array being const
v4: https://www.spinics.net/lists/bpf/msg47021.html
* rebased on bpf-next
* update patch 2 to add support for writable raw tracepoint attachment
in attach_raw_tp().
* update patch 3 to add Acked-by tag
v3: https://www.spinics.net/lists/bpf/msg46824.html
* use raw_tp.w instead of raw_tp_writable as section
name of writable tp
* use ASSERT_XXX() instead of CHECK()
* define a common macro for "/sys/kernel/bpf_testmod"
v2: https://www.spinics.net/lists/bpf/msg46356.html
* rebase on bpf-next tree
* address comments from Yonghong Song
* rename bpf_testmode_test_writable_ctx::ret as early_ret to reflect
its purpose better.
v1: https://www.spinics.net/lists/bpf/msg46221.html
====================
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Diffstat (limited to 'net')
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